Mining-machine.



C. E. DAVIS.

MINING MACHINE.

APPLICATION FILED 11111.13. 1911.

1,149,502. Patented Aug. 10, 1915.

1 fz I C. E. DAVIS.

MINING MACHINE. APPucATloN man 1AN.13,191|.

1,149,502. .v v Pat-entd Aug. 10, 1915.

' 2 SHEETS-SHEET 2.

l aarentran enanas ne -1 CHARLES E. IDAVS, OF CHICAGO, ILLINIS, ASSIGNORTG GQODMAN MANUFACTUG CQMPANY, F CHICAGO, ILLNOIS, A CORPORATON 0EELLNIS. i

MINING-MACHINE.

To all 'whom t may concern.:

Be it lmown'that L CHARLES E. Davis, a

-I citizen of the United States, residing at Chicago, in the county ofCook and State of Illinois, have invented a certain new and usefulImprovement in Mining-Machines, of which the following is a specication.

This invention relates to mining machines, and has for its object toprovide anew and improved machine of this description.

The invention is illustrated in the accompanyingl drawings, whereingFigure 1 is a plan View. of a mining machine embodying the invention;Fig. 2 is a side elevation of the machine shown in Fig. l; Fig. 3 is asectional view taken on line 3 3 of Fig. 2.

Like numerals refer to like parts throughout the several figures.

Referring to the drawings, 'I have illustrated a mining machine.consisting of a frame 1, carrying a motor 2 and the controlling andfeeding mechanism, and having projecting therefrom a cutter arm 3, aboutwhich moves a suitable cutter chain L provided with a series of cutters5 that engage the material to be cut.

1n the use of the machine the cutters engage the material to be cut, asshown in Fig. 1 as they pass across the end of the cutter arm and alongone side thereof, and

K the machine is moved laterally to feed the cutters forward. A flexiblepower transmitting device 6 is wound upon a drum 7 and passes about apulley 8, and is then fastened to some fixed device 9. The drum 7 isconnected with the motor 2 by means of the gear 10 on the shaft 1l,which engages teeth 12 on the interior of the drum. lt will thus be seenthat by rotating the drum 7, so as to wind up the flexible powertransmitting device 6, the machine will be moved toward the fixed device9.

ln view of the resistance to the cutters of the material to be cut, Aitwill be seen that the rear end of the machine will' be moved forwardmore rapidly than the forward end. Some suitable means is providedforpreventing the too rapid movement of the rear end of the machine.provide a second drum 13, which has wound upon it a flexible powertransmitting device 14, connected sto a fixed devicel on the other sideof the machine from the xed device 9. Some means must/The provided forSpecification of Letters Patent. v

Application filed January 13, 1911.

/ lived, the

As herein shown, I f

Serial No. 602,388.

controlling the drum 13 to ccntrol the .unfl winding of the flexiblepower transmitting device in such manner as to keep the machine inproper position as it is ,fed toward Patented Aug itil, tl

the face to be out. In the present drawing I have shown a preferredconstruction for this purpose. The drum 13 is fastened to a sleeve 16mounted on the shaft 17 (see Fig. 3). l?. xed to the sleeve 16 is abeveled gear 18. Loosely mounted on 'the sleeve is ane5 other beveledgear 19. Mounted between the beveled gears 18 and 19 is a gear 20. Retatably mounted in openings in this gear are the beveled pinions 21,22,said. pinions being held in place by the pins 23. The T0 gear 20 engagesa pinion 2e on the shaft 25, said pinion being connected with a notchedcontrolling wheel 26 provided with a series of notches 27. Connectedwith the beveled gear 19 is .a gear 28 which engages gear 75 29 on theVshaft 30 adapted to be connected with the motor. Associated with thewheel 26 is a controlling arm Slprovided with a projection 32 adapted tofit in one of the notches 27. vided with a handle 33, so that it can becontrolled by hand. The arm 31 is pivctedat 3ft and the lower endthereof is ccnnected with the rod or connecting piece 35 pivoted Thisarm is preferably-preV so to the lever 36. This lever is pivoted totliess frame at the point A37. Rigidly connected.' with the lever 36 andextending at an angle therefrom is an engaging piece 38 which end gagesthe flexible power transmitting device 6, and which has a projectingpart 39 which so projects below said flexible power transmitting device.Associatedwith the ccnnecting piece 35 is a spring lli), whichengages astop 4:1 on the frame f the machine,

and a stop 4:2 on the connecting piece, so es that when the pressure ofthe flexible power transmitting device upon the part 38 is reparts arereturned to their normal position.

l have described in detail one formof ap wfparatus for carrying theinvention into practice, but it is of course evident that the form,construction and arrangement of the parts may be varied withoutdeparting from the spirit of my invention.

The use and operation'of my invention are as follows: When the machineis in operu ation the tiexible power transmitting device 6 is fastenedtothe fixed device'9, and the flexible power transmittingkdevice 1e isfas- 110 tened to the fixed device i5. The drum'? is the rotated so as'to feed the machine laterally against the material to be cut. rThepower transmitting device il on the drum 13 retards the movement oit therear end of the machine so as 'to keep the machine in proper position.rlhe drum 13 is rotated by its connection with the motor so as to payout 'the flexible power transmitting device to permit the proper feedingof the machine. If the flexible power transmitting device 1l: holds themachine back to too great an eX- tcnt, the .machine will be moved to aninclined position with the cutter arm ahead. The flexible powertransmitting device 6 then moves the lever 36 so as to rock about itspivotal point. This causes the connecting piece to be moved toward therear so as to disengage the projection 32 from the notch in the wheel2.6, as shown in dotted lines rin Fig. 2. 'The wheel 2G is then releasedand is tree to revolve, thus permitting pinion 2t to revolve and gear 20to revolve. rhis gear il) is normally held against rotation when thewheel 26 is stationary. The drum is now released from its connectionwith the motor, and the farther feeding ot Yiachine moves the rear endaround to its proper position, whereupon the lever 36 and connectingpiece are moved by means of spring 40, so to move the projection intoone oil the notches 27 and stop thewheel 26, thus again connecting thedrum 13 with the motor. rllhe retarding device is then again put intooperation. lt will thus be seen that both the feeding mechanisni and there: rding mechanism are directly connected with the motor, so as to beoperated thereby; that means are provided for rendering the retardingmechanism more or less inellective or inoperative; that this means maybe automatimor not, as desired; and that complete and. accurate controlof the feeding of the machine is secured.

l claim:

l. mining machine comprising a frame, a cutter projecting therefrom, amotor mounted thereon, a flexible power transmitting device adapteil` tobe connected with a fixed part ata distance. trom the frame, i. rota-tYble paity on the Jframe with which said ieiaible powertransmittingdeviceis connect d, c. retarding device comprising a rotatable drinn,flexible power transmitting device thereon, connected with a fixed partat 'distance therefrom, both of 'said drums operatively connected withsaid motor so as to be operated thereby, and means for automaticallyrenderinvf the retarding device inoperative under predeterminedconditions,

2. A mining machine comprising a frame, a, cutter projecting therefrom,a. motor mounted on saidl frame, a feeding mechanism for feeding thecutter toward the material to be acted upon, comprising a flexible powertransmitting device, a retarding device for retarding the action of thefeeding device, said retarding device operatively connected with saidmotor, a pivoted lever adapted to engage said flexible powertransmitting device, a connection between said lever and the operatingmechanism of the retarding device, whereby the movement of said lever toa predetermined position, renders the retarding device inoperative.

3. A mining machine comprising a i rame, a cutter projecting therefrom,a motor mounted on said frame, a feeding device Jfor feeding said cuttertoward the material to be acted upon, comprising a. flexible powertransmittingr device, a drum mounted on said frame, a flexible powertransmitting device on said drum adapted to be connected with a fixedpart at a distance from the frame, so as to retard the movement thereof,a driving mechanism connecting said drum and' said motor, a leveradapted to be engaged by the flexible power transmittingl device of thefeeding mechanism, and a connection between said lever and the drivingmechanism. of said drum, whereby the driving mechanism is renderedinoperative when the. lever is moved to a predetermined position.

l. A mining machine comprising a trame, a cutter projecting therefrom, amotor mounted on said frame, a feeding device 'for moving the machinelaterally to feed it toward the material to be acted upon, a retardingdevice for modifying the eil'ect of said feeding device, a connectionbetween. said rotar-ding device and a portion of said feeding mechanism,by means of which the retarding device is automatically renderedinoperative under predetermined conditions.

5. A mining machine comprising a trame, a cutter projecting therefrom, amotor mounted on said frame, means for moving said frame and cutterlaterally to feed the machine, a retarding device -for retarding themovement of the rear end of the machine, comprising a drum rotatablymounted on said frame, a flexible power transmitting device thereon7adapted to be connected with a ixed part at a distance from the machine,a beveled gear connected with said drum, a second beveled gearoperatively connected with said motor, a beveled pinion between saidbeveled gears, a rotatable part upon which said pinion is mounted, a.holding device for holding said rotatable part against rotation, so thatthe drum will be rotated by said motor, and means :tor releasing saidholding device so that it is free to rotate.

6. A mining machine comprising a trame, a cutter projecting therefrom, amotor mounted on said frame, means for moving said frame and cutterlaterally to feed the machine, a retarding device for retarding themovement ofI the rear end of the maisnchine, comprising a drumrotatablyI mountedon said frame, a flexible' power transmitting devicethereon, adapted to be connected with a fixed part at a distance fromrthe machine, a beveled gear connected withv said drinn, a secondbeveled gear operatively connected with said motor, a beveled pinionbetween said beveled gears, a rotatable part upon which said pinion ismounted, a holding device for holding said rotatable part againstrotation, so that the drum will be` .rotated by said motor, a device-forautomatically releasing said holding device,com pri'sing a lever adaptedto. engage a portion of the feeding mechanism, and a connection betweensaid lever and said holding device whereby when the lever is moved to apredeternnned position the holding device will be released.

7. A mining machine comlirising a frame, a cutter projecting therefrom,a motor mounted thereon, a feeding device operatively connected withsaid motor for feeding the cutter toward the material to be acted upon,a retarding device for retarding the movement of the rear end of themachine, and means for automatically varying the effectiveness of theretarding device.

8. A mining machine comprising a frame, a cutter projecting therefrom, amotor mounted thereon, a feeding device operatively connected with saidmotorfor feeding the cutter toward the'material to be acted inoperative.K

9. mining machine comprising a frame. a cutter projecting therefrom, amotor mounted thereqii, a feeding device for feed! ing the cutter towardthe material tofbe acted upon, a retarding'device for retardiing themovement of the rear end of the niachinc, and a controlling deviceresponsivev to the angle of inclination of said machine with relationtothe direction of its travel for automatically modifying theeffectiveness of the retarding device.

10. A mining machine comprising a frame, a. cutter projecting therefromand adapted to cut the material to be acted upon, a feeding device forfeeding the cutter tovard the material to be acted upon, a retardingdevice for retalding tliamovemcnt of the rear end'of the machine andmeans for varying the action of said retarding device, said meansresponsive to variations in the I degree of angularity of said frame.

Signed at Chicago, Illinois, this 22d day of December, A. D. 1910.

1. CHARLES E. DAVIS li/Vitiiesses:

EDNA K. REYNOLDS, DONALD M CARTER.

e@ means for rendering said retarding device

